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Structural studies of type N superconductive compounds: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences of chemical treatments on physical properties; Etudes structurales des composes supraconducteurs de type N: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences des traitements chimiques sur les proprietes physiques

Abstract

Different chemical treatments of R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} compounds monocrystals (gadolinium, europium, samarium, neodymium and praseodymium cuprates) modify their physical properties especially their superconductive properties. The presented chemical treatments are: the substitution of the trivalent rare earth element R by an other trivalent lanthanide, its substitution by tetravalent cerium, and heat treatment under low oxygen pressure. After these chemical treatments, structural modifications are observed by neutrons and X-rays diffraction, and allow to precise their actions: size effect of the rare earth element on the deformation of the CuO{sub 2} planes, links between deformation and superconductivity and magnetic properties. (A.B.). 394 refs/.
Authors:
Publication Date:
Jun 01, 1995
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-555
Reference Number:
SCA: 665411; 360207; PA: AIX-28:060662; EDB-97:123273; SN: 97001845146
Resource Relation:
Other Information: DN: 394 refs/.; TH: These (D. es Sc.).; PBD: Jun 1995
Subject:
66 PHYSICS; 36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; CERIUM OXIDES; COPPER OXIDES; CUPRATES; DOPED MATERIALS; EUROPIUM; EUROPIUM OXIDES; GADOLINIUM; GADOLINIUM OXIDES; HEAT TREATMENTS; LATTICE PARAMETERS; MAGNETIC SUSCEPTIBILITY; MICROSTRUCTURE; MONOCRYSTALS; NEODYMIUM; NEODYMIUM OXIDES; NEUTRON DIFFRACTION; NEUTRON DIFFRACTOMETERS; OXIDATION; PRASEODYMIUM; PRASEODYMIUM OXIDES; REDUCTION; SAMARIUM; SAMARIUM OXIDES; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; X-RAY DIFFRACTION; X-RAY DIFFRACTOMETERS
OSTI ID:
519824
Research Organizations:
Laboratoire Leon Brillouin (LLB) - Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France); Paris-11 Univ., 91 - Orsay (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE97640605; TRN: FR9603054060662
Availability:
INIS; OSTI as DE97640605
Submitting Site:
FRN
Size:
234 p.
Announcement Date:
Sep 23, 1997

Citation Formats

Vigoureux, P. Structural studies of type N superconductive compounds: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences of chemical treatments on physical properties; Etudes structurales des composes supraconducteurs de type N: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences des traitements chimiques sur les proprietes physiques. France: N. p., 1995. Web.
Vigoureux, P. Structural studies of type N superconductive compounds: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences of chemical treatments on physical properties; Etudes structurales des composes supraconducteurs de type N: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences des traitements chimiques sur les proprietes physiques. France.
Vigoureux, P. 1995. "Structural studies of type N superconductive compounds: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences of chemical treatments on physical properties; Etudes structurales des composes supraconducteurs de type N: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences des traitements chimiques sur les proprietes physiques." France.
@misc{etde_519824,
title = {Structural studies of type N superconductive compounds: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences of chemical treatments on physical properties; Etudes structurales des composes supraconducteurs de type N: R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} (R = Gd, Eu, Sm, Nd, Pr); influences des traitements chimiques sur les proprietes physiques}
author = {Vigoureux, P}
abstractNote = {Different chemical treatments of R{sub 2-x}Ce{sub x}CuO{sub 4{+-}{delta}} compounds monocrystals (gadolinium, europium, samarium, neodymium and praseodymium cuprates) modify their physical properties especially their superconductive properties. The presented chemical treatments are: the substitution of the trivalent rare earth element R by an other trivalent lanthanide, its substitution by tetravalent cerium, and heat treatment under low oxygen pressure. After these chemical treatments, structural modifications are observed by neutrons and X-rays diffraction, and allow to precise their actions: size effect of the rare earth element on the deformation of the CuO{sub 2} planes, links between deformation and superconductivity and magnetic properties. (A.B.). 394 refs/.}
place = {France}
year = {1995}
month = {Jun}
}